Biochemistry MCQ (BP203 T) I (QUIZ - 29) F. Y. B. Pharm SEM –II (UNIT- 2)

 

BIOCHEMISTRY (BP203T) MCQ (Quiz-29) 

Carbohydrate Metabolism 

MULTIPLE CHOICE QUESTIONS

F. Y. B. PHARM  SEM-II (UNIT - 2)

AS PER PCI SYLLABUS

1. Electron transport and phosphorylation can be uncoupled by compounds that increase the permeability of the inner mitochondrial membrane to

  A) Electrons 
B) Uncouplers
C) Protons
D) All of these

... Answer is : C) Protons

2. The standard free energy of hydrolysis of terminal phosphate group of ATP is

A) 10,000 cal/mol
B) –8,300 cal/mo
C) +7,300 cal/mol
D) –7,300 cal/mol

... Answer is : D) –7,300 cal/mol

3. Sufficient energy required to produce 3 ATP from 3 ADP and 3 pi is

A) 31,900 cal
B) 39,900 cal
C) –21,900 cal
D) 29,900 cal

... Answer is : C) –21,900 cal

4. Under standard conditions

A) Keq is equal to 1
B) The free energy change ∆G°, is equal to 0
C) The standard free energy change ∆G, is equal to 0
D) The free energy change, ∆G°, is equal to the standard free energy change, ∆G°

... Answer is : D) The free energy change, ∆G°, is equal to the standard free energy change, ∆G°

5. All of the following statements about the enzymic complex that carries out the synthesis of ATP during oxidative phosphorylation are correct except

A) It is inhibited by oligomycin
B) It can bind molecular O2
C) It can exhibit ATPase activity
D) It is located on the matrix side of the inner mitochondrial membrane

... Answer is : A) It is inhibited by oligomycin

6. The reaction catalysed by phosphofructokinase.

A) Uses fruitose-1-phosphate as substrate
B) Is the rate-limiting reaction of the glycolytic pathway
C) Is activated by high concentrations of ATP and citrate
D) Is inhibited by fructose 2, 6-bisphosphate

... Answer is : B) Is the rate-limiting reaction of the glycolytic pathway

7. Which one of the following would be expected in pyruvate kinase deficiency?

A) Increased phosphorylation of Glucose to Glucose-6-phosphate
B) Decreased ratio of ADP to ATP in R.B.C
C) Increased levels of lactate in the R.B.C
D) Hemolytic anemia

... Answer is : D) Hemolytic anemia

8. Which one of the following compounds cannot give rise to the net synthesis of Glucose?

A) α-ketoglutarate
B) Acetyl CoA
C) Glycerol
D) Lactate

... Answer is : C) Glycerol

9. The synthesis of glucose from pyruvate by gluconeogenesis

A) Occurs exclusively in the cytosol
B) Requires the participation of biotin
C) Requires oxidation/reduction of FAD
D) Is inhibited by elevated level of insulin

... Answer is : B) Requires the participation of biotin

10. Pasteur effect is

A) Inhibition of enzyme phosphofructokinase
B) Oxygen is involved
C) Inhibition of glycolysis
D) All of these

... Answer is : D) All of these